martin luther king jr. the president will celebrate at two inaugural balls, versus the ten held four years ago. even if there's less fanfare, the day will not be without its pomp and circumstance. and star power. katy perry kicked things off at a concert earlier this weekend. ♪ at last >> reporter: and beyonce, whose rendition of edda james' "at last" was a highlight of the 2009 inauguration, will this time perform the national anthem, at the capitol ceremony. who can forget that moment in 2009. again, sasha pointed out, dad did not mess it up. he has one more shot at it. >> that's right, josh. >>> today, a day for poetry. the prose of governing comes next. and jonathan karl at the capitol for that. as the president prepares to deliver his speech, his team is gearing up for a lot of big debates ahead. >> reporter: you can see the presidential podium, still covered in plastic. it is from there that he will deliver one of the most important speeches of his presidency, hoping to set the tone for a second ter